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Observation of fast and slow modes associated with ICRF heating in the TFR tokamak by CO2 laser scattering

TFR Group, A. Truc, D. Gresillon1982年被引用 28Nuclear FusionIF 3出版社

Using a CO2 forward-scattering experiment during ICRF heating in a D2-H2 plasma, fast and slow waves associated with the heating mechanism are observed. The fast wave, with long wavelength, is observed through a coupling between the fast wave and drift waves. A measure of the corresponding electric field is given. When approaching the ion-ion hybrid layer, the fast wave is slowed down and an electric field increase is observed (swelling) . Afterwards, the fast wave undergoes conversion and becomes a slow one, which is directly observed and analysed. Its corresponding electric field is measured. 'Sawtooth relaxations' are also observed on this signal. The importance of the hybrid layer and the rotational transform in the process is outlined.

日本語訳

D2-H2プラズマ中のICRF加熱中にCO2前方散乱実験を用いて、加熱機構に関連する速波と遅波が観測される。長波長の速波は、速波とドリフト波との結合を通して観測される。対応する電界の測定値が与えられる。イオン-イオン混成層に近づくと、速波は減速され、電界の増大(スウェリング)が観測される。その後、速波はモード変換を受けて遅波となり、それが直接観測・解析される。その対応する電界が測定される。この信号には「鋸歯状緩和振動」も観測される。この過程における混成層と回転変換の重要性が概説される。

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Fusion Advanced Studies TorusIon cyclotron heatingTFR
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